Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751510AbaKKSMo (ORCPT ); Tue, 11 Nov 2014 13:12:44 -0500 Received: from mx1.redhat.com ([209.132.183.28]:53502 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750859AbaKKSMm (ORCPT ); Tue, 11 Nov 2014 13:12:42 -0500 Date: Tue, 11 Nov 2014 13:12:28 -0500 From: Dave Jones To: Linux Kernel Cc: pgynther@google.com, marcel@holtmann.org, linux-bluetooth@vger.kernel.org Subject: bluetooth related firmware loader spew on resume. Message-ID: <20141111181228.GA27815@redhat.com> Mail-Followup-To: Dave Jones , Linux Kernel , pgynther@google.com, marcel@holtmann.org, linux-bluetooth@vger.kernel.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Since the addition of 10d4c6736ea "Bluetooth: btusb: Add Broadcom patch RAM support", I (and a number of other people[*]) have been seeing this trace on resume from suspend. WARNING: CPU: 1 PID: 8565 at drivers/base/firmware_class.c:1127 _request_firmware+0x4c1/0x7c0() CPU: 1 PID: 8565 Comm: kworker/u17:0 Not tainted 3.17.2-200.fc20.x86_64 #1 Hardware name: LENOVO 2356JK8/2356JK8, BIOS G7ET94WW (2.54 ) 04/30/2013 Workqueue: hci0 hci_power_on [bluetooth] 0000000000000000 00000000f52a564b ffff8800a8c63be8 ffffffff817271cc 0000000000000000 ffff8800a8c63c20 ffffffff81094ced ffff8800a8c63d10 ffff8801365ddf00 ffff8801387b4b00 ffff8800a8c63d08 00000000fffffff5 Call Trace: [] dump_stack+0x45/0x56 [] warn_slowpath_common+0x7d/0xa0 [] warn_slowpath_null+0x1a/0x20 [] _request_firmware+0x4c1/0x7c0 [] ? snprintf+0x49/0x70 [] request_firmware+0x31/0x50 [] btusb_setup_bcm_patchram+0x83/0x550 [btusb] [] ? rpm_idle+0xd6/0x2b0 [] hci_dev_do_open+0xe1/0xa60 [bluetooth] ACPI: \_SB_.PCI0.LPC_.EC__.BAT1: docking Restarting tasks ... [] ? ttwu_do_activate.constprop.90+0x5d/0x70 [] hci_power_on+0x40/0x1e0 [bluetooth] [] ? lock_timer_base.isra.34+0x2b/0x50 [] process_one_work+0x149/0x3d0 [] worker_thread+0x11b/0x490 [] ? rescuer_thread+0x2e0/0x2e0 [] kthread+0xd8/0xf0 [] ? kthread_create_on_node+0x190/0x190 [] ret_from_fork+0x7c/0xb0 [] ? kthread_create_on_node+0x190/0x190 ---[ end trace 75a0e9c7f33ebb4c ]--- bluetooth hci0: firmware: brcm/BCM20702A0-0a5c-21e6.hcd will not be loaded Bluetooth: hci0: BCM: patch brcm/BCM20702A0-0a5c-21e6.hcd not found At first I thought it was just over-reaction to the file being missing, but looking at the WARN_ON, it appears that we're trying to invoke the firmware loader before userspace is back up ? In this (and probably other related) kernel, CONFIG_FW_LOADER_USER_HELPER is unset, in case that matters at all. Dave [*] https://bugzilla.kernel.org/show_bug.cgi?id=81821 https://bugzilla.redhat.com/show_bug.cgi?id=1133378 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/